but the cylinders have a bore and stroke of 120 by 140 mm., and
run at 1,300 r.p.m. normal speed. The weight, including radiator,
is 360 lbs., and the price complete £625. The petrol and oil
consumptions per unit of power are the same in both engines ; two
carburettors are also employed on the 90 h.p. model, but the
ignition is served by one Bosch magneto fitted with a double dis
tributer.
In the sizes below the 90 h.p., which include the 65 h.p. and
the 40 h.p. motors, only four cylinders are used. The bore and
stroke of the 65 h.p. engine is 120 mm. by 140 mm., the normal
speed 1,350 r.p.m., the weight 255 lbs., and the price ^495. In
the 40 h.p. model the corresponding figures are 100 mm. by 120 mm.
for the bore and stroke, 180 lbs. for the weight, 1,450 r.p.m. for the
normal revolutions, and ^315 for price.
On test, conducted under the direct supervision of the Austrian
Army, the 90 h.p. model delivered its stated power on the
dynamometer at 1,310 r.p.m. ; it was then fitted with its propeller,
and ran for 20 hours under full load at an average of 1,320 r.p.m.
without stopping.
At the end 0! this run the engine was examined, and, having
been found to be entirely in good condition, and requiring no
adjustment, was restarted for a further run of 20 hours under full
load at the same average speed. At the conclusion of this period
the engine was again connected up to the dynamometer, tested,
and found to be giving the same power as it did before the test.
It was then dismantled, and having, as the result of very careful
inspection, been found to be in perfect condition, it was finally
accepted by the authorities.
I201P
GO HP 9Cr-P
Power curves of the 60 h.p., 90 h.p. and 120 h.p. Austro-
Daimler engines.
The cam-shaft and crank-shaft of the 120 h.p. Austro-Daimler engine.
® ® ® ®
ROYAL FLYING CORPS (MILITARY "WING).
WAR OFFICE summary of work for week ending August 23rd:—
No. 1 (Airship) Squadron. South Farnborough.—The early
part of the week was devoted to rigging " Eta," and to overhauling
the engines of "Beta." " Eta " was out on three days, carrying
out various trials. On the 20th she towed the Naval airship No. 2
from Odiham to Farnborough. '' Beta'' was flown to Tidworth
and back (120 miles) on the same day. On the 21st " Beta " was
taken to Wraysbury, where she remained two nights. She returned
to Farnborough on the 23rd.
No. 2 (Aeroplane) Squadron. Montrose.—BE's and
Maurice Farmans were out daily throughout the week. Capt.
Longcroft tested a new BE on the 16th at Farnborough, and flew
this machine to Montrose on the 19th, with the Commanding
Officer as passenger. One landing only was made—at Alnmouth—
to replenish with petrol and oil. The journey of about 530 miles
took 7 hrs. 40 mins., exclusive of the time spent at Alnmouth.
The first part of the flight breaks the existing world's record for
flight with a passenger. The machines of the Squadron going to
Ireland are now ready for the flight there, preparatory to taking
part in the Irish Command manoeuvres.
No. 3 (Aeroplane) Squadron. Netheravon.—Several long
cross-country reconnaissance flights were made by officers of this
squadron during the week. Work in the observation of artillery
and rifle fire was carried out on the 21st. 1,264 miles in all were
flown.
No. 4 (Aeroplane) Squadron. Netheravon.—Breguets and
Maurice Farmans were out daily carrying out reconnaissance flights.
On the 21 st, several machines co-operated in a 3rd Division
exercise. Major Raleigh flew two Breguets over to Netheravon
after they had been tested at Farnborough on the 19th and 20th
respectively.
^(No. 5 (Aeroplane) Squadron. South Farnborough.—All
the officer and N.C.O. pilots were flying daily on Maurice Farmans,
carrying out reconnaissances and instructional flights.
Flying Depot (L. of C). South Farnborough.—Experimental
work on BE's and Maurice Farman's was continued.
To Assist General Henderson.
LIEUT.-COL, W. MACADAM (R.E.) has been appointed an
assistant director of military aeronautics at the War Office.
The I.C.S. Entente Cordiale Prizes.
WE learn from the International Correspondence Schools that
the ^700 which they have offered for a race from Paris to London
will be divided into a first prize of ^500, and a second of £200,
while in addition there will be the International Schools Challenge
Trophy. It is stipulated that there must be a minimum of ten
entries, and at least four, must be British pilots.
Sopwith Batboat Wrecked.
IT is indeed a stroke of ill-luck that the Sopwith Batboat
which, by its winning of the Mortimer Singer Prize and its subse
quent work in naval hands, had proved itself such an efficient
machine, should have been wrecked on Sunday. On the previous
day Lieut. Spencer-Grey, R.N., had arrived from Southampton,
and as the sea was too rough for the machine to be beached it was
moored close to the West Pier. It rode out the night splendidly, but
the next morning the heavy seas splashed over the boat, and matters
were not improved by the wash of passing steamers. It is hardly
to be wondered at that eventually the boat was waterlogged. An
attempt was made by a party of coastguardsmen to get the craft
ashore, but the task was by no means easy, and seemingly in the
process the machine struck on a submerged groin, being completely
wrecked. It will be seen that the unfortunate happening was really
due to no defect in the machine.
A Bleriot built by an Amateur.
MR. VINCENT FILL and his 35 h.p. Anzani-Bldriot type mono
plane are seen in our photographs on page 957. This machine has
been entirely built by Mr. Fill in his spare time as a pupil at the
Eastbourne Aviation Co's flying grounds. Although assisted by
the foreman, all the work was practically done by himself. The
machine flies well and Mr. Fowler has himself been up on it for
some time. The whole work has been thoroughly well carried out,
and does great credit to its constructor, who took his ticket on an
E.A.C. biplane about three weeks ago, and he is now learning to
fly the machine of his own building.
967